"Death of a Ghost" revolves around the iconic detective, Hercule Poirot, who is called to solve a perplexing case related to the murder of a well-known painter. The story begins when the artist's unfinished painting becomes the focal point of intrigue, leading to questions about the circumstances surrounding the artist's death. Poirot's keen eye for detail and methodical approach to investigation help him navigate the complex relationships among the key players in the artist's life.